This seems to be a reasonable list: http://www.amazon.co.../R2J9J00LAIKTG8. I actually always thought the John Wayne scene was supposed to be from The Searchers, like the trailer, but possibly not. The skeletons and mummies just seem generic to me.

There is no specific horror movie being referenced, they went generic here. Those horror movies of the 30s and 40s your guide mentions were primarily Universal movies (Dracula, Frankenstein, The Invisible Man, The Mummy, The Bride of Frankenstein, The Wolf Man, etc.). So as you can imagine, their theme park competitor isn't going to give them the rights to these instantly recognizable characters, which means they had to go generic.